feat(blog): replace hardcoded posts with dynamic loading from markdown files

Dynamically load blog posts from markdown files instead of using hardcoded data. Posts are now sorted by date and categories/tags are automatically extracted from frontmatter. This makes content management easier and more maintainable.

src/pages/zh/blog/index.astro

@@ -3,57 +3,69 @@ import BlogLayout from '../../../layouts/BlogLayout.astro';
 import BlogList from '../../../components/BlogList.tsx';
 import { type Lang } from '@/i18n/utils';
 import { defaultLang } from '@/i18n/ui';
+import { type BlogPost } from '@/types';
 
 // 使用Astro.currentLocale获取当前语言环境
 const lang = Astro.currentLocale as Lang || defaultLang;
 
-// 示例博客数据 - 暂时内联
-const blogPosts = [
-  {
-    id: 1,
-    title: "精通 React Hooks：深入探索",
-    description: "探索 React Hooks 在函数组件中管理状态和副作用的强大功能，包含实用示例和最佳实践。",
-    image: "https://images.unsplash.com/photo-1633356122544-f134324a6cee?w=400&h=250&fit=crop&crop=center",
-    date: "2025年5月10日",
-    readTime: "5分钟阅读",
-    tags: ["React", "JavaScript", "前端"],
-    slug: "mastering-react-hooks"
-  },
-  {
-    id: 2,
-    title: "使用 Docker 扩展 Node.js 应用",
-    description: "学习如何使用 Docker 容器化 Node.js 应用程序，实现生产环境中的无缝部署和可扩展性。",
-    image: "https://images.unsplash.com/photo-1605745341112-85968b19335b?w=400&h=250&fit=crop&crop=center",
-    date: "2025年4月25日",
-    readTime: "7分钟阅读",
-    tags: ["Node.js", "Docker", "DevOps"],
-    slug: "scaling-nodejs-docker"
-  },
-  {
-    id: 3,
-    title: "使用 Tailwind CSS 构建现代 UI",
-    description: "探索如何使用 Tailwind CSS 实用类和组件模式创建美观、响应式的用户界面。",
-    image: "https://images.unsplash.com/photo-1507003211169-0a1dd7228f2d?w=400&h=250&fit=crop&crop=center",
-    date: "2025年4月15日",
-    readTime: "6分钟阅读",
-    tags: ["CSS", "Tailwind", "UI/UX"],
-    slug: "modern-ui-tailwind"
-  },
-  {
-    id: 4,
-    title: "大型项目的 TypeScript 最佳实践",
-    description: "在企业级应用中维护代码质量和开发者生产力的必备 TypeScript 模式和实践。",
-    image: "https://images.unsplash.com/photo-1516321318423-f06f85e504b3?w=400&h=250&fit=crop&crop=center",
-    date: "2025年3月30日",
-    readTime: "8分钟阅读",
-    tags: ["TypeScript", "JavaScript", "架构"],
-    slug: "typescript-best-practices"
-  }
-];
+// 使用Astro.glob读取所有中文博客文章
+const allPosts = await Astro.glob('./posts/*.md');
 
-// 示例分类和标签
-const categories = ["React", "Node.js", "TailwindCSS", "TypeScript", "DevOps"];
-const tags = ["#React", "#JavaScript", "#前端", "#Node.js", "#Docker", "#DevOps", "#TailwindCSS", "#CSS", "#TypeScript"];
+// 处理博客文章数据
+const blogPosts: BlogPost[] = allPosts.map((post) => {
+  const slug = post.url?.split('/').filter(Boolean).pop() || '';
+  
+  // 获取文章的默认图片，如果frontmatter中没有指定
+  const defaultImage = "https://images.unsplash.com/photo-1516321318423-f06f85e504b3?w=400&h=250&fit=crop&crop=center";
+  
+  return {
+    title: post.frontmatter.title,
+    description: post.frontmatter.description || '',
+    image: post.frontmatter.image || defaultImage,
+    slug: slug,
+    tags: post.frontmatter.tags || [],
+    date: post.frontmatter.date || post.frontmatter.pubDate || '',
+    readTime: post.frontmatter.readTime || post.frontmatter.readingTime || '5分钟阅读',
+  };
+});
+
+// 按日期排序
+const sortedBlogPosts = blogPosts
+  .filter(post => post.date) // 过滤掉没有日期的文章
+  .sort((a, b) => {
+    const dateA = new Date(a.date).getTime();
+    const dateB = new Date(b.date).getTime();
+    return dateB - dateA; // 降序排列，最新的文章在前
+  });
+
+// 从博客文章中提取分类和标签
+const allCategories = new Set<string>();
+const allTags = new Set<string>();
+
+// 收集所有文章的分类和标签
+allPosts.forEach(post => {
+  // 处理分类
+  if (post.frontmatter?.category) {
+    const categories = Array.isArray(post.frontmatter.category) 
+      ? post.frontmatter.category 
+      : [post.frontmatter.category];
+    
+    categories.forEach(category => {
+      if (category) allCategories.add(category);
+    });
+  }
+  
+  // 处理标签
+  if (post.frontmatter?.tags && Array.isArray(post.frontmatter.tags)) {
+    post.frontmatter.tags.forEach(tag => {
+      if (tag) allTags.add(tag);
+    });
+  }
+});
+
+// 转换为数组并排序
+const categories = Array.from(allCategories).sort();
+const tags = Array.from(allTags).map(tag => `#${tag}`).sort();
 
 ---
 
@@ -115,7 +127,7 @@ const tags = ["#React", "#JavaScript", "#前端", "#Node.js", "#Docker", "#DevOp
 
         <!-- 博客文章 -->
         <div class="lg:col-span-3">
-          <BlogList posts={blogPosts} lang="zh" client:load />
+          <BlogList posts={sortedBlogPosts} lang="zh" client:load />
         </div>
       </div>
     </div>